In the last lab that we performed, you observed that some elements have metallic properties. They are shiny, can bend easily and are good conductors of electricity. Nonmetals on the other hand, are dull and tend to be brittle and break. They tend to be insulators and do not conduct electricity well. Metalloids, as you learned have properties of both metals and non metals.
In this lab you will perform two more tests on the given elements to determine if they are a metal or nonmetal. If the substance is a metal, it will most likely react with acid or copper sulfate. Metals tend to have incomplete outer electron shells and must react with other elements in order to complete these shells.
Lab Safety: In this lab you will be working with an acid. You must wear safety goggles and the person who is handling the acid must wear gloves. Elect one person in your group to be in charge of handling the chemicals. Make sure that they are practicing safe laboratory skills. Wash your hands when completing this lab.
Materials:
6 samples of elements
HCl
Copper Sulfate
Prelab
1.) What is a physical property of metals?
2.) What is a chemical property of metals?
3.) What are the two chemicals that you will be working with in today's lab?
4.) What is one safety precaution that you must take in this lab?
5.) Predict: Based on your data from part 1 of this lab, predict which samples are metal and which are nonmetal.
Procedure
Take your data from last classes lab and create a new data table with that data and two more columns for new data: reaction with HCl and reaction with Copper Sulfate (CuSO4).
Once you have your data table and prelab complete, call over your teacher to provide materials.
Data
Record in data table.
Analysis
1.) Based on your observations, which elements might you classify as metals?
2.) Which might you classify as nonmetals?
3.) Would you classify any of them as metalloids?
Conclusion
Was your hypothesis correct? Obtain actual results from teacher.
Identify 3 things your learned in this lab.
Suggest a research question that you might like to investigate further.
Metal or Nonmetal - Part 2
In the last lab that we performed, you observed that some elements have metallic properties. They are shiny, can bend easily and are good conductors of electricity. Nonmetals on the other hand, are dull and tend to be brittle and break. They tend to be insulators and do not conduct electricity well. Metalloids, as you learned have properties of both metals and non metals.
In this lab you will perform two more tests on the given elements to determine if they are a metal or nonmetal. If the substance is a metal, it will most likely react with acid or copper sulfate. Metals tend to have incomplete outer electron shells and must react with other elements in order to complete these shells.
Lab Safety: In this lab you will be working with an acid. You must wear safety goggles and the person who is handling the acid must wear gloves. Elect one person in your group to be in charge of handling the chemicals. Make sure that they are practicing safe laboratory skills. Wash your hands when completing this lab.
Materials:
6 samples of elements
HCl
Copper Sulfate
Prelab
1.) What is a physical property of metals?
2.) What is a chemical property of metals?
3.) What are the two chemicals that you will be working with in today's lab?
4.) What is one safety precaution that you must take in this lab?
5.) Predict: Based on your data from part 1 of this lab, predict which samples are metal and which are nonmetal.
Procedure
Take your data from last classes lab and create a new data table with that data and two more columns for new data: reaction with HCl and reaction with Copper Sulfate (CuSO4).
Once you have your data table and prelab complete, call over your teacher to provide materials.
Data
Record in data table.
Analysis
1.) Based on your observations, which elements might you classify as metals?
2.) Which might you classify as nonmetals?
3.) Would you classify any of them as metalloids?
Conclusion
Was your hypothesis correct? Obtain actual results from teacher.
Identify 3 things your learned in this lab.
Suggest a research question that you might like to investigate further.